Comment 186 for bug 993187

I confirm that I have had the same problem since I upgraded to Ubuntu Precise. The freezes I experience are completely random, sudden, and there is nothing I can do. I tried upgrading to 3.4.0 and I still experienced freezes. I tried downgrading to 3.0.0 and I still experience freezes. I have just now downgraded Xorg to 1.10.4 to see if this solves anything. When the machine freezes, somewhat more often than once a day, nothing works, keyboard does not respond, mouse doesn't move, SysRq does not work, and I cannot ssh to the machine. Even the fan kind of goes down (maybe because nothing is happening), but I can usually see the screen at the time of the freezing (even if the powersaving was active). No logs whatsoever get generated. If I didn't stumble into this post, I would have guessed something must have broken on my new laptop right at the same time I upgraded to Ubuntu Precise. I have a Dell Vostro V131 with shared graphic card using the i915 driver. Unfortunately, I have no clue how to help debugging this annoying bug. In ten years I have used Linux, this is the worst I have ever experienced. I am testing now if the Xorg downgrading brings any luck.